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What country is sarajavo in?
sarajavo is in bosnia
What woman helped develop the material of a bullet-proof vest are made?
Body armour is as old as warfare. We will never know who (or what group of people) originally strapped on something for protection. Bullet proof vests are the most recent incarnation of body armour. Sometime in the 1800s both the Japanese and the Chinese developed rudimentary bullet proof vests made of 30 layers of silk. The garment was good enough to stop a blackpowder shot. As guns became more sophisticated, the layers of silk became useless. The modern bullet proof vest was developed by 2 Polish Americans, Casimir Zeglen and Jan Szczepani. They developed a way of weaving steel plates between layers of silk. Their vests could stop a .44 cal bullet but were very hot and heavy to wear. Interesting little note on the steel and silk vest. Archduke Franz Ferdinand was wearing one on his ill-fated trip to Sarajavo in 1914. Zeglen was able to convince the Archduke to wear one but alas, the Archduke was shot in the neck, not the chest. If Gavrilo Princip had aimed lower and hit the Archduke in the chest, history may well have turned out differently.
